Motorola MCS 2000 Service Instructions Manual page 31

Reassembly of Radio
Revision B, 5/98
3. Place a small drop of flux on transistor collector flange between
capacitors. Place chisel style solder iron tip between capacitors and
onto collector flange of transistor. Feed in some high temperature
solder (SN96PB04) so that inside solderable edges of both
capacitors are soldered securely to collector flange of transistor.
4. Examine soldered capacitors. Ensure that they are reasonably flush
against transistor body and are not shorting transistor collector
flange to transistor heat sink.
5. Examine surrounding components to ensure that none of them
have been damaged or displaced.
1. Examine face of transistor heat sink. Ensure that it is free from
burrs and flux, which could prevent a good thermal contact to
radio chassis.
2. Spread thermal compound on heat sink of the following
components:
• Transistor Q6505
• PA module U6501
• Audio PA module U0203
• +5V regulator U0500
• +9.3V voltage regulator U0501
3. Place a new thermal pad, Motorola Part No. 7508184K01, on heat
sink block B6501.
4. Install transceiver board into radio chassis following procedure
provided in Volume 1 of this service manual, Motorola
Publication 68P81083C20.
Troubleshooting and Repair 23